<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>级联选择</title>
    <link rel="stylesheet" href="./cascader.css">
    <style>
        .main {
            display: flex;
            height: 100vh;
            justify-content: center;
            align-items: center;
        }
    </style>
</head>
<body>
    <div class="main">
        <div id="cascader"></div>
    </div>
    <script src="./cascader.js"></script>
    <script src="./index.js"></script>
</body>
</html>